The resistance of a Wire that must be placed parallel with a 120 resistance to obtain a combined resistance of `4Omega` is

Which one of the following is the resistance that must be placed parallel with 12Omega resistance t obtain a cmbined resistance of 4Omega ?

A piece of wire having resistance R is cut into five equal parts. If the five parts of the wire are placed in parallel,how will the resistance of the combination compare with the resistance of original wire?

Three resistances of 4 Omega,5 Omega and 20 Omega are connected in parallel. Their combined resistance is :

A piece of wire having a resistance R is cut into five equal parts. a) How will the resistance of each part of the wire change compared with the original resistance ? b) If the five parts of the wire are placed in parallel, how will the resistance of the combination change ? c) What will be the ratio of the effective resistance in series connection to that of the parallel connection ?

A technician has onlytwo resistance coils. By using them singly, in series or in parallel, he is able to obtain the the resistance 3 Omega,4 Omega,12 Omega and 16 Omega . The resistance of two coils are:

Two coils connected in series have a resistance of 18Omega and when connected in parallel have a resistance of 4Omega . Find the value of individual resistance of the coils.

When two resistances are connected in parallel then the equivalent resistance is __. When one of the resistance is removed then the effective resistance is 2Omega . The resistance of the wire removed will be

When two resistance are connected in parallel then the equivalent resistance is (6)/(5)Omega When one of the resistance is removed then the effective resistance is 2Omega . The resistance of the wire removed will be